Description:
Adding missing indexes to support most of the searches on survey's
models to avoid seq.scans and non-selective index scans.
Also adding indexes that are inverse to One2many, or dependencies
of compute fields (as those if not indexes will trigger a seq.scan
when the ORM resolves the dependency tree).
If a domain had multiple criteria, only fields with the highest
selectivity were indexed. This shall also reduce the amount of tuples
returned, reducing IO access and cache trashing.
Cardinality:
survey_survey -> X (reference quantity)
survey_question -> 10X
survey_question_answer -> 50X
survey_user_input -> 330X
survey_user_input_line -> 7200X
Reference:
task-3724844
closesodoo/odoo#158136
Signed-off-by: Olivier Dony (odo) <odo@odoo.com>
Victor Piryns (pivi)
41e3b1cdc3